623445122881 has 16 divisors (see below), whose sum is σ = 718129520640. Its totient is φ = 530180698320.

The previous prime is 623445122879. The next prime is 623445122897. The reversal of 623445122881 is 188221544326.

It is not a de Polignac number, because 623445122881 - 2¹ = 623445122879 is a prime.

It is a super-3 number, since 3×623445122881³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (623445122281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108451 + ... + 1121896.

It is an arithmetic number, because the mean of its divisors is an integer number (44883095040).

Almost surely, 2^623445122881 is an apocalyptic number.

It is an amenable number.

623445122881 is a deficient number, since it is larger than the sum of its proper divisors (94684397759).

623445122881 is a wasteful number, since it uses less digits than its factorization.

623445122881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1230924.

The product of its digits is 737280, while the sum is 46.

The spelling of 623445122881 in words is "six hundred twenty-three billion, four hundred forty-five million, one hundred twenty-two thousand, eight hundred eighty-one".